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168 lines
3.0 KiB
C
168 lines
3.0 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: v_util.c,v 10.14 2001/06/25 15:19:36 skimo Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "../common/common.h"
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#include "vi.h"
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/*
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* v_eof --
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* Vi end-of-file error.
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*
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* PUBLIC: void v_eof(SCR *, MARK *);
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*/
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void
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v_eof(SCR *sp, MARK *mp)
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{
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recno_t lno;
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if (mp == NULL)
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v_emsg(sp, NULL, VIM_EOF);
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else {
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if (db_last(sp, &lno))
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return;
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if (mp->lno >= lno)
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v_emsg(sp, NULL, VIM_EOF);
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else
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msgq(sp, M_BERR, "195|Movement past the end-of-file");
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}
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}
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/*
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* v_eol --
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* Vi end-of-line error.
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*
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* PUBLIC: void v_eol(SCR *, MARK *);
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*/
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void
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v_eol(SCR *sp, MARK *mp)
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{
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size_t len;
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if (mp == NULL)
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v_emsg(sp, NULL, VIM_EOL);
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else {
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if (db_get(sp, mp->lno, DBG_FATAL, NULL, &len))
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return;
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if (mp->cno == len - 1)
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v_emsg(sp, NULL, VIM_EOL);
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else
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msgq(sp, M_BERR, "196|Movement past the end-of-line");
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}
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}
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/*
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* v_nomove --
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* Vi no cursor movement error.
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*
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* PUBLIC: void v_nomove(SCR *);
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*/
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void
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v_nomove(SCR *sp)
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{
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msgq(sp, M_BERR, "197|No cursor movement made");
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}
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/*
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* v_sof --
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* Vi start-of-file error.
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*
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* PUBLIC: void v_sof(SCR *, MARK *);
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*/
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void
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v_sof(SCR *sp, MARK *mp)
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{
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if (mp == NULL || mp->lno == 1)
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msgq(sp, M_BERR, "198|Already at the beginning of the file");
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else
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msgq(sp, M_BERR, "199|Movement past the beginning of the file");
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}
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/*
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* v_sol --
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* Vi start-of-line error.
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*
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* PUBLIC: void v_sol(SCR *);
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*/
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void
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v_sol(SCR *sp)
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{
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msgq(sp, M_BERR, "200|Already in the first column");
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}
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/*
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* v_isempty --
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* Return if the line contains nothing but white-space characters.
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*
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* PUBLIC: int v_isempty(CHAR_T *, size_t);
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*/
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int
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v_isempty(CHAR_T *p, size_t len)
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{
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for (; len--; ++p)
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if (!isblank(*p))
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return (0);
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return (1);
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}
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/*
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* v_emsg --
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* Display a few common vi messages.
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*
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* PUBLIC: void v_emsg(SCR *, char *, vim_t);
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*/
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void
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v_emsg(SCR *sp, char *p, vim_t which)
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{
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switch (which) {
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case VIM_COMBUF:
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msgq(sp, M_ERR,
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"201|Buffers should be specified before the command");
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break;
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case VIM_EMPTY:
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msgq(sp, M_BERR, "209|The file is empty");
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break;
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case VIM_EOF:
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msgq(sp, M_BERR, "202|Already at end-of-file");
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break;
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case VIM_EOL:
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msgq(sp, M_BERR, "203|Already at end-of-line");
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break;
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case VIM_NOCOM:
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case VIM_NOCOM_B:
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msgq(sp,
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which == VIM_NOCOM_B ? M_BERR : M_ERR,
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"204|%s isn't a vi command", p);
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break;
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case VIM_WRESIZE:
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msgq(sp, M_ERR, "Window resize interrupted text input mode");
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break;
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case VIM_USAGE:
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msgq(sp, M_ERR, "205|Usage: %s", p);
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break;
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}
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}
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